Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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Comparison of Seismic Responses of Underground Utility Tunnels Using Simplified Analysis Methods

단순화 해석 방법에 따른 지하공동구 지진 응답 산정 비교

  • Kim, Dae-Hwan (Nabih Youssef & Associates) ;
  • Lim, Youngwoo (R&D Center, Haemil EnC Inc.) ;
  • Seo, Hyun-Jeong (Department of Research Planning Division, KIT Valley Inc.) ;
  • Lee, Hyerin (Department of Architecture and Architectural Engineering, Seoul National University)
  • Received : 2024.05.21
  • Accepted : 2024.05.31
  • Published : 2024.07.01
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Abstract

In the seismic evaluation of underground utility tunnels, selecting an analytical method is critical to estimating reasonable seismic responses. In simplified pseudo-static analysis methods widely applied to typical seismic design and evaluation of underground tunnels in practice, it is essential to check whether the methods provide valid results for cut-and-cover tunnels buried in shallow to medium depth. The differences between the two simplified pseudo-static methods are discussed in this study, and the analysis results are compared to those obtained from FLAC models. In addition to the analysis methods, seismic site classification, overburden soil depth, and sectional configuration are considered variables to examine their effects on the seismic response of underground utility tunnels. Based on the analysis results, the characteristics derived from the concepts and details of each simplified model are discussed. Also, general observations are made for the application of simplified analysis methods.

Keywords

Acknowledgement

본 연구는 2024년도 정부(과학기술정보통신부, 행정안전부, 국토교통부, 산업통상자원부)의 재원으로 정보통신기획평가원의 지원을 받아 수행된 연구입니다 (No. 2020-0-00061, 디지털트윈 기반의 지하공동구 화재·재난 지원 통합플랫폼 기술개발).

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